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ABB i-bus
EIB / KNX
© 2004 ABB STOTZ-KONTAKT GmbH
Project design and programming
Object: "Slave valve heating" and " ... cooling": 1 bit (EIS1)
Via these objects, the master controls two switch outputs for regulating the
heating or cooling circulation valves. The switch outputs must be
parameterised as "slaves".
"Slave valve heating" has the value "1" if the room thermostat issues the
command for heating via the object "Control value heating" ("Control value
cooling" ≥ switch ON threshold for fan speed 1).
"Slave valve cooling" has the value "1" if the room thermostat issues the
command for cooling via the object "Control value cooling" ("Control value
cooling" ≥ switch ON threshold for fan speed 1).
It is only possible for either "Slave valve heating" or "Slave valve cooling" to
have the value "1". If the command for heating and cooling is (wrongly!)
issued simultaneously by the room thermostat, heating mode has priority.
Telegram value
These objects are visible when using a 4-pipe system i.e. there are two
valves for heating and cooling.
Object: "Telegr. fault thermostat": 1 bit (EIS1)
This object indicates a possible fault of the room thermostat. If the object
value "Control value heating" or "Control value cooling" is not available for a
parameterisable period, it is assumed that the room thermostat has a fault
and the fan coil controller reports a fault and switches to the safety position.
Telegram value
Object: "Status switch": 1 bit (EIS1)
Indicates the current state of the output.
Telegram value
Object: "Telegr. status byte": 1 byte (non EIS)
This object is only visible for the Electronic Switch Actuator Modules ES/M
2.x.1. It provides more detailed information about the operating state of the
device. The object value is sent when there is a change in the value.
Bit
Meaning
0 (LSB)
Overload (e.g. short circuit) at output A
1
Overload (e.g. short circuit) at output B
2
Not used, always "0"
3
Not used, always "0"
4
Not used, always "0"
5
Not used, always "0"
6
Supply voltage available
7 (MSB)
Type of supply voltage: 0 = AC; 1 = DC
A detailed table to classify the object value can be found in section 5.1.
"0"
Valve closed
"1"
Valve opened
"0"
No fault
"1"
Fault
"0"
Relay opened
"1"
Relay closed
60
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